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We do not normally list the online and printed versions of the same service separately, as EMBASE and Excerpt Medica Academic Search, etc. are not indexing services. They are distributors. They can be used that way, but that is not their key function. Usually we haven't listed distributors, because of the frequent change and the dozens of such services. Trying to make a list like this as long as possible is an indication of using Wikipedia for publicity, and is not acceptable. DGG ( talk)